@InProceedings{huang2021effattn,
  author =      "Huang, Luyang
                and Cao, Shuyang
                and Parulian, Nikolaus
                and Ji, Heng
                and Wang, Lu",
  title =       "Efficient Attentions for Long Document Summarization",
  booktitle =   "Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics",
  year =        "2021",
  publisher =   "Association for Computational Linguistics",
}